With the use of a very small amount of soda ash. Maybe a quarter cup. To be safe use smaller amounts and check the pH frequently until you have stabilized the pH at a level that is satisfactory. A pH of 7.2 is not that far out of bounds if you do not have a heater. You might also want to check the total alkalinity. If it is on the high end of the scale or test I would do nothing to raise the pH. The low pH will buffer the high alkalinity.
How many gallons will fit into a 24 foot diameter x 4 foot high round swimming pool
20
56.52
24 foot round pool would be 24 feet across from the middle of the pool basically measure the diameter of the pool.
A 20 foot round pool has a radius of 3.2 feet. So the pool has a volume of pi*r2*h = 101.86 cubic ft approx.
Depends on the depth of the pool
A 22-foot round pool that is 4 feet deep holds about 43,238.5 liters of water.
About 28,944.8L
30 feet!
A 2-foot round pool with 12 inches of water is holding about 23.6 gallons of water.
A 28-foot round pool filled with 4 feet of water would contain about 18,500 gallons.
You should not put any Earth in your 18 foot round 5 foot deep pool. You should only put water and cleaners in the pool.